diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,42 +1,64 @@
 # musipy
 
-## Usage
-
-python musipy.py -s source/dir/ -o output/dir/ -attr attribute -m sort
-
-### -s, --source=
-
-The source directory to scan for files, default to current directory when you run this script
-
-### -o, --output=
-
-The output directory, default to source/dir/output
-
-### -attr, --attribute=
-
-The attribute to use when sort, this could either be 'genre' or 'album'
-
-### -m, --mode=
-
-The mode to use, currently only 'sort' and 'playlist' is able to use. In future update: 
-
-+ [X] 'sort' for sorting files in source/dir by attribute
-+ [ ] 'backup' for backing up files structure in a source/dir
-+ [ ] 'restore' for restoring files in source/dir to a backup flash
-+ [ ] 'rename' for rename multiple files names (Track1.mp3, Track2.mp3... or similar) using a file input of Titles, Artist, Genre, Album, Disk
-+ [X] 'playlist' for creating playlist file by any config in source/dir
-
-#### PLay list configuration
-
-When the playlist mode is chosen, you will need to provide the name of the output file through `--playlistname`. The place of the playlist will be at sourcedir, which is 'current working directory' by default.
+A tool to organize your music files.
 
 ## Why I create this
 
-I have a very big folder of files, and searching through files is hard for me, also, the structure when I first place them in is hard to navigate. I want to create a script to move files using tag and organize them. And create a playlist with the options I prefer.
+I have a very big folder of music files, and searching through files is hard for me, also, the placement was hard to navigate. I want to create a script to move files using tag and organize them.
 
-## When will I deploy?
+Then comes a few more use case.
 
-I do not know, I just create for myself. Hosting on Git is to keep my project organized, and hope to get some collaborators.
+## Usage
+
+```sh
+python run.py --help
+
+Usage: run.py [OPTIONS] COMMAND [ARGS]...
+
+Options:
+  --help  Show this message and exit.
+
+Commands:
+  format
+  playlist
+  sort
+```
+
+### Sort
+
+Take all files in `src` arrange them by `attr` and move the files to `dst/attr`. I currently use this to re-arrange my files by album.
+
+### Playlist
+
+Take all files in `src` by `attr` and output a `m3u` playlist file. I use VLC to open `m3u`, a request for another format is always helpful, just ping me a request.
+
+### Format
+
+/// Not implement yet
+
+Rename the files in `src` and follow the format `fmt`.
+
+## Development
+
+### The command line - core
+
+Using 2 foreign library `click` to handle CLI commands; `TinyTag` to parse info from music files. Then the arguments are passed to `CommandHandler` to validate the argument. After that, arguments are taken to `CommandExecutioner` specific class to handle the job.
+
+### The GUI
+
+Hopefully in the future updates. Provide basic GUI to select task, set arguments and make a call to core.
+
+### Testing
+
+Right now just plain testing is being done.
+
+### Coding guidelines
+
+I work on python3 with flake8 and mypy for linting.
+
+### Bug and feature request
+
+Just open a new issue.
 
 ## License